Governing mechanism for turbines.



y@ ...if i U" d yI.

No. 875,033. PATENTED DEG. 31., 19074 G. H. WORSEY.

GOVBRNING MEGHANISM FOR. TURBINES.

APPLICATION FILED JUNE 22,1906. RENBWED JULY 13.1907. l

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if' r4 il g 5 No. 875,033. PATBNTBD DEG. 31, 1907.

G. H. WORSEY. GOVERNNG MEGHANISM FOR TURBINES.

APPLICATION FILD JUNE 22, 1906. RENEWED JULY 13.1907.

4 SHEETS-SHEET 2.

Witnessces:

Chares H ,Worsey PATENTED DBG. 31, 1907.

C. H. WORSBY. GOVBRNING MEGHANISM POR TURBINBS. APFLAlON FILED JUNE 22,1906. RBNEWED JULY 13.1907.

4SHBETS-SHEET 3.

Inventor;

AMM

No. 875,038. PATENTED DEG.31, 1907.

C. H. WORSBY. GOVBRNING MBGHANISM FOR TURBINBS.

APPLIGATlON FILED JUNE 22,1906. RENEWBD JULY 13.1907.

4 SHBETS-SHEET fr.

Inventor?,

Witneases: W

[Wj ,f Charlesff. Orsay,

Y l, Ryn/@wv "ASIA '2 5 clis'iging devices.

H. WGBSEY, CF LYNN, liASSiGHUSETTS,

Assieme To ennemi iiiinc'isie ters Patent. lziftented illes. Sie 3907.

lipplictioi tiled (linie 1906i Serial No. 322.812. Renewed July i3,1907. Beiel. ilo. 383.52@-

To all whom i may concern:

.Be it known that e citizen of the, United. States, itesidin; Ly'ny'eounty of Essex, State of Messecliw settle, lieve invented c'ei' einnew and seitul improvements in Governing li/iecluinisms to@'."iiuibinesg of which tile ieilewinff e ene-cite (lotion. f The objectoi the piesent invention It@ provide 's governing inecintnisni 'forelastic fiiiidtinbines wliicliis ofi proved con.sti'uction andiefiislbie end eiiicient in operation, reducing to minimum. end placingen eXti-eineiy-ligiit leed on governor, tlie energy foi yeiying'ti'ieeiiectiyejiositien the Vel-ye ectnsting nieclis'fiisni being trains-.mitted directly the in 'o testine "t t0. seid lneeiienisni end .notii'oin the gowTM 'einen The invention .ieietes more pe. ticuleily tothat type ei turbines in'wliicii :i plurali ty oi seperate lvsuceessiyely se tu Valves ereused te'eent'roi the admission oi steeinei' .other elastic iluid to the .noz/.slee ci' ctiie.1 dis- Vl'naccompanying direi-wings, ilinstisting one oi tile embodiments myinvention, Figui'e '1 isA e. pertiai sectional elevation oi 'turbineshowing the governing nia'ioiiztnism and Valve gear; Fig. 2 is s.partial lioiigaei'itel section ci the seme; Fig. 3 is s. detti-il Viewof e steedying device; Fig. i is e partiel end yi-ew sind section withthe covei piste iemoved; Fig. 5 iss-n end 'ViewY showing pitifticularlythe goyeinoi' levei'; Fig.. (i is a pei'- spective View oi :i csni endits yoke or crossjhefi'd and Figs. 7 and 5:1 sie peis}' ectife views fofthe shifting cani disks.

The casing l 'oi' the tui'bine coute-ins eue o1' .14m more Wheels 2escl?. carrying ene oi' more .vows

. of buckets 3. Between eficl'l two rows of `Wheel. buckets medocetedmore oi' less com jplete rows'oi intermediate liuclietsd. Steam or otherelas'ticiluid from e suitable source of'supEl-y passes from the steamchest 5, thi'ou'g expsndingor non-expa'tnding no1/f zlesor other iiuiddiselimgingl devices to said buckets. The passage oi" ste/em to thenozzles is regulated Aby t plurality oi valves 'Z having f seats Thevalve stems 9 pass ythrough stuiiine-boXesiO in` the steam chest coverand are eojustelily coupled et 1 i to i'ods 12 rnounted lto slide insuiteblc besi'ingsend halving'yokes 'or cross needs 13 at one end.

. moui'itcd on stud tion site? they me moved sci'iiied.

ifi ie'gn'ssents spe. responsive device oi' governor ci any sluts. leconstiuction mount ed upon tl'ie end elf lie :iur-in tuieine shaft 15ietete tlieiewitli, but it might be driven in seid sliefit intermediateconnections, .esiied.

illie eem 'L' gs in .,n from t tufbine sl'isit l5 by ineens ci e.Venti/eel. siti t i? end wenn gein-ing i8, i9 oi in seine o nei' neli-knewn manner. Upon 't ie is secuiied e. seiies ei velve sting ce:24C und the shifting cem disks The sions 2G may be .lnfought into nentwit-li the yolies i3 under propel" conditions to open ei close thevalves 7 in e i isi* to ire desciiiied. il'ie goveinei' iles e. swivelconnection 23 .Vitiione end oi lever 241, pivoted :it 25 on tl'ie casinginclosing seid governor. A. link 2G connects the other end. oi the lever24 to the stepped and tilting leve-i' 27, pivotally 23 adjacent the cemshaft and Witliiu its casing. The ends oi seid lever sie tepped et 2S),30]. and these steps m enthe shitting cmu disks 2l7 @ne end oi thcstepped lever 27 carries 'a positioning' device which consists of 2.spring"- piesscd plunge? il having; a. rounded end 3L engaging' one oie. series of correspondingly slieped iei-.esses P3 in projecting portion34 oi tlie casini, The tension oi the plunger spi'ing niey be adjustedby ineens ol' e nut 35. By ineens oi this arrangement the lever 27 ismoved in e. step-loy-stcp manner and the pi'ope relation of the partsinsured.

The shsflt '1.6 end its cams are rotated constantly in the direction oithe arrow', 'F 2. The cams 2O are so located on shaft i6 that no two oi''the yelves cfm be opened or closed .et the seme time out the Gems maybe made tiiepfit to open s. valve 7, o1', 0D.A

Thine freine o1 casing, isv

ne steam chest holds them being suitably shifted, the cam may engagevthe part 37 to close the valve, or further shifting may place it in aposition where it can engage neither` o6 nor 37. Thus, in Fig. 2, thecam 20 nearest the shifting cam disk 21 is in a position to close itsvalve While the cam 20 next beyond is positioned to engage the part 36to open its valve, and the other cams 20 are so positioned as to have noeifect on the valves. The valves are moved solely by the cams and remaineither open or closed lever 27- to'swing on its pivot and move a fcorresondingstep at the end 30 from contact with t e disk 22. At the same timethe end 32 of the yielding plunger of the positioning device rides overthe intervening ridge from one recess 33 to the next and retains thelever in position. l

' The de th of the recess 38, Fi s. 2 and 8, is such tllfat the outeredgeof tie step en gages the incl-ined cam surface 39 and furtherrotation of the shaft 16 forces it and the cams carried therebylongitudinally until the' edge of disk 22 engages the next step at 30.The energy for effecting the longitudinal movement is transmitted fromthe shaft 15, thus relieving the governor of all load incident to themovement. This movement is sucicient to move the cam 20 nearest pivot 28out of engagement with its yoke and to place the cam 20 next disk 21 inposition to open its valve. on the cam shaft 16 to permit the shaft toslide through said gear. Similarly,- When the speed is increased abovethe normal, the steps at the end 30 of the lever 27 are forced againstthe disk 22 to shift the cam shaft in the opposite direction to eil'ectthe successive closing of as many valves as is necessary to maintainproper regulation of the speed- When the s eed is normal, neither of theends of the iever -is forced against the disks and the position of thevalves remains 'unchanged. A

The relative location of the cams 20 and the cam surfaces 39 is suchthat the shifting of the cam shaft 16 occurs when the cams 20 are inposition to clear the yokes 13.

This form of governing mechanism-places an extremely light load upon thegovernor which has merely to move the lever 27 into position to engagethe shifting cams. When The worm-gear -19a is splined- While themechanism has been described as operating on a series of valves it is tebe understood that the number of valves in the series may be varied tosuit therequirements 'of any given machine and that but one valve may beused if desired. The 'mechanism may also be used toy control theoperation of stage valves instead of admission valves as shown.

In accordance with the provisions of the patent statutes, I havedescribed the principles of operation-of my invention, together with theapparat-ns which I nov,y consider to represent the best embodimentthereof; but I desire to have it understood that the apparatus shown isonly illustrative and that the invention canbe carried out by-othermeans.

What I claim as new and desire to secure' by Letters Patent of theUnited States, is,--"

1`, The'eombination with a regulator of a n and a devicepositioned bythe governor which causes the actuator to shift the cam laterally toopen or close the valve to satisfy ioad requirements'.

.3. The combination with a driving shaftv and a cam shaft driventhereby, of a cam on the latter shaft, a valve, means for transmittingmotion from the cam to the valve, a speed responsive device, and meanspositioned by the device which causes the driving v shai-t to shift thecam shaft longitudinally to vary the action of the cam on the valve tosatisfy load requirements.

4; In a governing mechanism, the comblnation of a regulator, means formovmg theregulator in one direction or the-other, I

and aload-responsive device for controlling the operation of saidregulator including a.

lever having stepped ends.

5. In a governing mechanism, the combination of a plurality ofregulators, means for opening and closing said regulators, and

. stepped ends aveces v ,si

Voperation of said regulators including a tiltchanges inthe load 'forcontrolling theoperation of said valve ii'iclnding a lever having and apositioning device for said lever. 'i

7.' ln governing mechanism, the come hination of a valve', means foropening and closing said valve, load-responsive device controlling theoperation lof said valve including a lever and a positioning device forsaid lever comprising a springpresscd plunger and a fixed abutmenthaving recesses ywith which Atno end. of said plunger yieldingly engages.

8. The combination of a regulator with a constantly rotating cam foractuating said regulator, means" `for transniitting-`motion from the camto the regulator, a means acting upon opposite ends-of the cam shaft forshifting the cam to a given position to move the regulator inone'direction and'for shifting it to another position to move theregulator inthe opposite direction. i

in a governing mechanism, the combination of a main driving shaft, aregulator, a constantly rotatingwcam for actuating said regulator, meansfor transmitting inotioii .fromtlie cam to the regulator, a meansenergized oy the shaft for shifting the cam to a given position to movethe regulatorin one direction and for shifting it to another position tomove the regulator in the opposite. direction, and aspeedlre'sjtwnsivedevice for' coi'itrolling said shifting means.

l0. The combination. 'of a regulator, a constantly rotating cam foractuating the regulator, means for transmitting motion from the cani tothe regulator, and a means acting upon opposite ends of the cam shaftfor shifting the cam to one side of a given position to move.

' the regulator iii one direction and for shifting it further in thesame directioiito move the regulator in the opposite direction and. for

` shifting itVv still further` in' said direction to release-ftheregulator from the cam.

l l. 1in-a governing mechanism, the coinlnnation of a main shaft, avalve, a constantly Lrotating cani for :wtuating Ithe valve, means fortransmitting motion from thc cam to the valve, a inoans energized hydihemain shaft for shifting the cam to ono sideof a'givcn position to movqythe v'alvc in one direction and for shifting it further in' tlic'samedirection to 'move the valve in the opposite direction and for shiftingit stil-l further in said direction to release thc valve from the cani,anda speedresionsive device controlling 'said shifting means.

l2. ln a governing mechanism, the cF inhination of a plurality ofvalves, means for ad devices, means for shifting the devices inl tuatingsaid valves, a device for shifting said actuating means including alever having stepped ends, and a speedi'esponsiv.e mech- 4 anism whichpositions said lever to shift said l actuating means.- l. 1 l 70 13. ina governing mechanism, thefcomhinati-on of a plurality of valves,connectionsv spaced apartfor moving said valves, a main shaft,arotatingcam shaft, a plurality of cams on the shaft so spaced apartthat theycan engage they connections to open or close but 'one valve atime, means energized by the main shaft for shiftingthc camslongitudinally to actuat'e the valves in successive order in eitherdirection, and a siiced-responsive. device to control'the shiftingmeans.

14. ln a governing mechanism, the combination of a plurality of valves,a shaft, a se- -iies yof valve-actuating devices mounted on said shaftand receiving their motiontherefrom, means for transmitting motion fromthe devices to the valves, shifting means moving with said shaft, 'adevice adjacent said shaft which may be moved into engager fment withsaid shifting means, a load-re sponsive mechanism which movessaidilevice into or out of operative engagement with the sliiftiiw meansto shift said series of devices longitudinally in either direction toengage said transmitting means and control the operation of the valves.

15'. In a governing mechanism, the comhi-` nation of a plurality ofvalves, a shaft, a series of actuating devices for the valves mountedup'on the shaft and receiving their motion therefrom, means'fortransmitting lmotion from the devices toy the valves, shiftfing means onthe shaft, a lever adjacent the shaft having means at its ends to engagethe slliftingineans, and a speed or load-respon sive device controllingthe position of said le- 'ver and moving its ends into or out ofoperative engagement with the shifting means to shift the series ofdevices'in either direction to engagethe transmitting means and to open'or close the valves in successive order. lo. In a governing mechanism,the comlii nation of a plurality of regulators, a rotating sli'aft, aseries of actuating devices for the regulators mounted upon the shaft,means -for transmitting motion from the devices to vthe valves, ashifting cam on the shaft adja cent cach end of said-series, allo/verpivoted -at a point between the cams adjacent the shaft and'liavingstepped ends, and a loadvresponsive devicediaving a connectionwith saidlever to in ove itsends into or out of operative engagement'withtheshifting cams to move said series o f deviceslongituglinally in eitherdirection to engage thetransmitting means and to'open or close thercgi'ilatorsin successive order.

17. ln a governing mechanism, tliecon'iliif nation of a series ofshiftahle valve-actuating cluding a lever, a speed-responsive mechan-18. In a governing mechanism, the combination of a series ol shlltahlecams, means vfor rotating the cams, ineans for shifting the camsincluding a lever, a speed-responsive device having a connection with alever, and a pivot for the lever which is located to reuw ceive thethrust of 'said shifting means to pre vent load upon said device.

19. In a governing mechanism, the combi-- nation of one or moreregulators, means fer smoes operating salidregulators including a shaft,means for shifting the shaft Ain either dlrection comprising tvvo disksmounted thereon and having oppositely disposed earn surfaces, a leverpivoted adjacent said shaft hav' ing stepped ends, and a load-res'onsive device having a connection with t ielever to move its ends intoor out of operative er1- ga ement with the cam surfaces.

n Witness whereof, I have hereunto set my 25

